PN counts

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The Planetary Nebula Binary Working Group Wiki: PN counts in external galaxies

PIs: Georger Jacoby

Team: Laura Fullton, Myung Gyoon, Orsola De Marco, Robin Ciardullo, John Feldmeier, Ho Seong Hwang.

Aim: To count PN in the GC system of M31, which is a test of binarity. In the Galaxy there are 4 known PN and this number, though in the low number statistics regime, is already in line with binary hypotheses.

Telescope/Instrument: WIYN Hydra

Technique: Spectroscopy

Run(s) dates (or proposal deadline): Proposed for March 08

Target list(s): M31

Publications:

Results Summary:

Likely Biases: The survey might obtain fewer than the true number of PNe in the M31 GC system, but this bias is quantifiable.

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